These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Rumours flooded the internet that Russian President Vladimir Putin has married glamorous Olympic gymnast Alina Kabayeva, right. Miss Kabayeva flashing a ring on her wedding ring finger while at an event in Nizhnekamsk, left. Putin, 61, was also spotted wearing a wedding ring while last week. In Russia, the wedding band is worn on the right hand.